BASIC LAB EQUIPMENTS

glass or plastic tubes used to transfer specific amount of liquid

does not dispense the exact volume

Examples of To Contain pipette

dispense the amount of volume indicated

examples of to deliver

has etched ring or two small rings near the top

EXAMPLES OF BLOW OUT

drain by gravity

Examples of SELF DRAINING

with calibration marks

EXAMPLE OF MEASURING OR GRADUATED

graduation marks continue to the tip

graduation ends BEFORE the tip

Volumetric and Ostwald folin is usually calibrated with only one specific volume

pipet with large belly

disposable, do not have calibration marks

meniscus for clear solution

meniscus for colored or viscous solution

apparatus used in quantitative measurements

National Bureau of Standards calibrated by?

Curvature in the top surface of the liquid

calibrated to hold one exact volume of liquid (TC)

designed to hold different volumes

TYPES OF AUTOMATIC PIPET

Relies on piston fore suction

Operates by moving the piston

obtain the liquid from common reservoir

types of dispenser and dilutor

used to draw liquid up

examples of pipet bulbs

used for measuring temperature in heating blocks and water bath

Used for refrigeration application

use for flat surface such as over or incubator

thermometer use color liquid or mercury

expensive thermometer, size and millisecond response time

micropipette p20 to p200

micropipette p1000

tip to prevent contamination